Heating and ventilating device.



JAMES L. WATERBURY AND OLYDE WATERIJIAN, GF MINNEAPOLS, MINNESOTA.

HEATNG AND VENTILATNG DEVIGE.

no. eosea.

' Application iled. Masch 7,

To all whom 'ivi may" concern:

Be it known that we, JAMES L. liiiiniinem and CLYDii lVArnnirAN, ot hilinneapoli`s,\ Hennepin county, Minnesota, have invented certain new and useful improvements in Heating and Ventilating Devices, of which the following is a specification.

The object of our invention is to provide an attachment for a stove or other' heater by ineans ot which pure air ma)7 be admitted 'to 'tliermnn and warmed before distribution so that an even circulation of pure, fresh air can be obtained in all parts of the rooin without creating a draft. rEhe invention is peculiarly adapted to school rooni's where the presence oic inany persons has the eti'eet oit rendering the air foul and unhealthful in a short. time unless sonie ettieieut ventilating ineans is provided.

A. further obiect is to provide an apparatus that is simple in construction, inexpensive of installation and capable ot use with a great variety ot' heaters.

The invention consists generally in various constructions and combinations, all as hereinafter described and partici'ilarly pointed out in the claims.

ln the actannpanyiug drawings forming part of this specilicatioii; Figure l is a side elevation of a heater illustrating the application of our invention to a heaterythe wall of the casing around the heater heilig broken away. Fig. 2 is a detail view illustrating` the delecting device provided outside the wall o1" the casing. Fig. 3 is a sectional view ou the line o--fc of Fig. 2. Fig. 4i illustrates :i modified construction of the deliector.

lIn the drawing, :2 represents a wall, and a. heater having a. line i for products ot' combustion. ilpon this heater we arrange the well known cylindrical casing or shell 5 open at the top and bottoni to allow the cold air near the iioor to pass up between the casing and the heater. The space between the casing and the heater is uiuibstructed to perniit the Jfree passage ot' the air. For the purpose of introducing cold air into the space between the heater and the casing we provide a pipe (5 arranged in the wall 2 ot' thc l'milding and having a screened opening 8 through which the pure Yt'resh air is admitted. rThis pipe niay be in any suitable position in the wall with. respect to the 'loor ot the room, and oi suitable sir/.e Lo obtain the desired an'iount oi'l air. The inner ond ot' the pipe (i is provided with a slightly ein .Specification of Letters Faisant.

- open or close the valves.

Patented Nov. 10, 1908.

1993. Serial No. 419,666.

larged rectangular section 9 having a curved end l0 to fitthe vall ot' the casing 5 and inclose an opening therein. rlhe section D is secured to theicasing by rivets or other suitable ineans.

For the purpose of deflect-ing the cold air upward and preventing the heat from the heater acting as a cushion to hold back the entrance. of the cold air into the casing we provide a series of valves 11 comprising fiat plates extending transversely ot' the section i) and provided with ears 12 and pivoted on Cross rods 13. A link lil connects the ears l2 ot' the series of valves to insure their simultaneous operation, and a` rod l5 attached to the upper valve and extends through the upper wall of the section i) in position to be grasped by the ope 'ator when it is desired to The valves are i arranged to lap by one another so that when they are in a vertical position the passage through the section will be entirely closed. Then they are open, as indicated in llig. L). the air entering the pipe will be delict-.ted upward in the direction ot' the arrows, and bc prevented troni dropping down to the hottoin of the casing and to the floor ot thc rooin. lVe are thus able to introduce pui-e fresh air into the casing without in any way obstructing the passage. between the casing and the heater. We regard this as an iinportant feature ot' the device.

lVe prefer to iiiake the sectionv i) of greater pensate For the space occupied by the vulves.r or in other words, provide a section ol sollicient size so that when the valves are open the area of the passageways between thciu will in the aggregate corrcslnnid .substantially to the cross sectional area ot thil pipe 3. WVO are thus able to introduce cold air to the casing without rctarding its passage. The valves are capable of adjustment to regulate the size o't' tlielpassagcs between thcin according to the temperature ot' the air cutering the pipe (3.

section 1G at the inner end of the pipe t3 that is flattened slightly with respect; to its upper and lower walls, particularly, and is upwardly inclined so that the lower wall ot the ion directs the air upward troni the point.- where it is discharged troni thc pipe (3 and causes it. to enter the casing ai.l an angle to the l'iorizontal7 the resultbeing that it cross sectional -area than the pipe o to conilin Fig. 4 we have illustrated a modified constri'iction which consists in p'ioviding a' 'through the pipe G- will ascend between the casing and the heater and mingling with the currents of warm air pass out into the room. It will also be noted in this construction that the space between the casing and the heater is entirely unobstructed and there is nothing to prevent the tree upward passage of the currents of air.

The sections 1G having no valves may have the same cross sectional arca. as 'the pipe (i though (littering somewhat in torni.

We have villustrated. this invention as at tachcd to the casing o'l.r a stove but de notwish to confine ourselves to such application as it is capable of use with other styles of' heating apparatus.

We claim as our invention:

l. The combination, with a heater, of a casing'inclosing the same and spaced there- '.troni, said casing being open at the top, and the space between saidv casing and said heater being unobstructed, and a` cold air pipe entering said casing at itsl side and having means positioned without saidcasing for imparting an upward movement to the currents of air entering said casing through said, pipe.

2. rfhe combination, with a heater, of a` casing inclosing the same and spaced therefrom and havingr open ends, the space between said casing and heater being uniform and unobstructed, a fresh air pipe arranged to introduce coldair through the wall of said cask ing, and a si. ries of valvcs provided in said fresh air pipe and arranged to direct the air currents upwardly at the point where they enter said casing, substantially as described.

3. The combination, with a heater, oit a casing int-losing the saine and spaced therefrom, the space between said casing and heater being open and unobstructed, a fresh air supply pipe having a section secured to said casing and inclosin g an opening therein,

sessie and a series of valves comprising pivoted blades having edges arranged to lap by one another mounted in said section, means connecting said valves with one another whereby all of them may be operated simultaneously, and an operating means projecting through the wall of said section, said valves being located opposite the opening in said casing to direct the air currents 'upwardly and outside the circumference of the same, whereby the free upward passage of the cnr rents. of air within the casing will be permitted.

4. The combination, with a heater, of a casing inclosing the same, and spaced therefrom, said casing being open at. the top, and the space between said casing and said heater being unobstructed, a cold air pipe arranged to deliver a supply of fresh air within said casing, and means within said cold air pipe and outside the circumference of said casing for directing the currents of cold air upwardly as they enter said casing and preventing the heated air from obstruct-ing the entrance 01E-fresh air to said casino'.

5. The combination,'with. a heater, of a easing inclosing the same and spaced therefrom, said casing being open at the top and bottoni and an unobstructed space being provided hetween it and the walls of said heater, a fresh air pipe arranged to introduce cold air into said casing, a seriesoi valves provided within said cold air pipeand consisting of plates hinged at one edge in said pipe and having ears and av bar pivotally connecting said ears, whereby all of said Valves may be operated simultaneously, and said pipe be- `,ing enlarged at the point where said valves are located to provide passages het-Ween the valves :when open, corresponding in area substantiallyv to the cross sectional area of said pipe, and said valves having means for operating them and being adapted to direct the currents of cold air upwardly as they enter said casing, substantially `as described.

In witness whereof, we have hereunto vset our hands this 2nd day of March 1908.

JAMES L. l/VATERBURY. 'CLYDE WAlERh/AN. lVitnesscs J. H. BALDwiN, J. BY'iNefroN. 

